Circular gene map of
plastome (A) and comparison of inverted repeat region of three plastomes from Ranunculaceae (B). A. Thick lines on inner circle indicate the inverted repeats (IRa and IRb, 26,403 bp), which separate the genome into small (SSC, 17,549 bp) and large (LSC, 84,733) single copy regions. Genes on the inside and outside of each map are transcribed clockwise and counterclockwise direction, respectively. The ring of bar graphs on the inner circle display GC content in dark grey. Ψ denotes a pseudogene and an arrow indicates the position of rpl32 pseudogene. B. Inverted repeat (IR) boundaries in three Ranunculaceae plastid genomes with Nicotiana tabacum as a reference genome are highlighted. Lengths of genes, large single copy (LSC), small single copy (SSC), and IRs are not to scale.